Oil pump



may 22, W23.

v. W. PAG

OIL PUMP Filed March 29 Q x A WITNESSES? A ITO/M1578 Patented May 22, 1923.

UNHT rare VICTOR W. PAGE, OF KEW GARDENS, NEW YORK.

OIL PUMP.

Application filed March 29, 1922.

To all whom it may concern:

Be it known that I, VICTOR WV. PAGIE, a citizen of the United States, and a resident of the city of New York, Kew Gardens, borough of Queens, in the county of Queens and State of New York, have invented a new and Improved Oil Pump, of which the following is a. full, clear, and exact description.

The present invention relates to new and useful improvements in internal combustion motors and it pertains more particularly to a new and novel form of oil-distributing pump and drive therefor.

It is one of the primary objects of the present invention to construct the lower half of the motor crank case in such a'manner that the same will have as an integral part thereof the oil pump housing.

It is a further object of the invention to so construct the oil pumlp housing that the rotor shaft and its driving gear may be supported between two well-oiled bearings, thus eliminating theoverhanging load on the pump bearing in devices of this character as commonly constructed.

With the above and other objects in view, the invention contemplates the formation of an oil pump housing as an integral part of the motor crank case, and, further, the provision of a structure in which the impeller shaft of the pump may be supported at two points instead of one as is the common practice.

With the above and other objects in view, reference is had to the accompanying drawings, in which Figure 1 is a vertical sectional view of the forward portion of an internal combustion motor constructed in accordance with the present invention;

Fig. 2 is a detail view in elevation of the means employed for driving the pump;

Fig. 3 is a horizontal sectional view show-- ing the pump and driving gear in top plan mew.

Referring more particularly to the -drawings, the reference character designates the motor cylinder block and 6 designates the crank case thereof, said crank case being formed with the forward main bearing 7 for the crank shaft 8. The forward end of the lower portion of the crank case 6 is formed with an inwardly projecting lug or boss 9 and said lug or boss 9 is hollowed out as indicated by the reference character 10 to form a pump cylinder or chamber. The for- Serial No. 547,899.

ward portion of this pump cylinder or chamber is closed by means of a plate 11 held in position by means of cap screws 12, bolts, or the like.

The rear wall 13 of the housing 10 is provided with a passage 14, andsaid passage is adapted to receive the impeller shaft 15 of the pump rotor 16, said passage forming one of the bearings for said shaft. In alinement with the passage 14, is a recess 17 and said recess 17 is adapted to receive the free or inner edge 18 of the impeller shaft 15, as more clearly shown in Fig. 1, said recess forming the other bearing for said impeller shaft. The bearing formed by the recess 17 is provided with an oil duct 19, by means of which lubricant is introduced to the bearing. The reference character 20 designates the driving gear of the pump, and said gear is keyed to the impeller shaft 15 and occupies a position between the bearing formed by the passage 14 and the bearing formed by the recess 17.

The reference character 25 designates the discharge or outlet of the pump, and 26 designates the inlet thereof, said inlet being connected by means of a suitable pipe 27 to the oil reservoir of the crank case. These outlet and inlet passages 25 and 26, respectively, are formed in the rear wall 13 of the pump chamber 10, as is more clearly shown in Fig. l, and the outlet 25 is adapted to supply lubricant to the various branches of the lubricating system about th motor.

The reference character 30 designates a gear carried by the crank shaft 8, said gear serving to drive the master gear of the timing gears indicated by the reference character 31. The driving gear 20 of the pump impeller meshes with this gear 30, as indicated by the reference character 32, in order to drive the pump.

The device functions in the following manner:

When the several parts are assembled and the motor is operating, the gear 30, through the medium of the gear 32, drives the pump impeller and lubricant is circulated from the oil reservoir in the crank case through the pump and to the various parts of the motor.

By the construction above described, it is apparent that the present invention provides a new and novel form of oil pump for internal combustion motors in which the driving gear of the pump is supported between bearings and driven by direct engagement with a gear on the crank shaft. Furthermore,by building the lubricant pump into the crank case as in the present invention, there are no parts to work loose as the oil leads are cast integral with the case. A still further object gained from this construction lies in the fact that the driving gear is supported between two bearings which construction removes or eliminates the overhanging load on the pump bearing that is enerally found where one end of the impeller shaft of the pump is not mounted in.

a steadying bearing.

What is claimed is:

1. In an internal combustion motor, an oil distributing pump located in the lower half of the motor crank case, a driving gear for said oil distributing pump, said driving gear being supported in bearings on opposite sides thereof, and a gear carried by the motor crank shaft for driving the gear of the oil distributing pump.

2. In an internal combustion motor, an oil distributing pump located in the lower half of the motor crank case, a rotor shaft mounted in bearings cast as an integral part ofsaid crank case, a gear carried by said rotor shaft, and a driving gear carried by the motor crank shaft and serving to drive the gear on the rotor shaft to drive the pump rotor.

3. In a motor, an oil pump housing formed on the front wall of the crank case of said motor, an oil pumping mechanism mounted in said housing, a removable plate for closing said housing and retaining the oil pumping mechanism in position, a shaft projecting inwardly of the housing into the crank case housing, a gear carried by said shaft, and a gear carried by the motor orank shaft and meshing with said last-mentioned gear to drive the oil pumping mechanism.

VICTOR- W. PAGE. 

